The applications are as follows: mosquito control, rice growing and viticulture. The particularity of the proposed service consists in the high-precision spraying and spreading of plant protection products with proprietary design, production and use machines: thanks to the high flight autonomy, the precision of positioning on the crop and the large load capacity, it is possible to provide a plant protection treatment (where permitted by current regulations) with greater precision than that carried out with the helicopter and at lower costs.